package com.ruoyi.zy;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequest;

/**
 * IpKit 获取 ip 地址的工具类
 */
public class IpKit
{
	
	public static String getRealIp(HttpServletRequest request)
	{
		String ip = request.getHeader("x-forwarded-for");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
		{
			ip = request.getHeader("Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
		{
			ip = request.getHeader("WL-Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
		{
			ip = request.getRemoteAddr();
		}
		return ip;
	}
	
	public static String getRealIpV2(HttpServletRequest request)
	{
		String accessIP = request.getHeader("x-forwarded-for");
        if (null == accessIP)
        {
        	return request.getRemoteAddr();
        } 
        return accessIP;
	}
	
	/**
	 * 获取本机 ip
	 * @return 本机IP
	 */
	public static String getLocalIp()
	{
		String localip = null;		// 本地IP，如果没有配置外网IP则返回
		String netip = null;		// 外网IP
		
		try 
		{
			Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
			InetAddress ip = null;
			boolean finded = false;		// 是否找到外网IP
			while (netInterfaces.hasMoreElements() && !finded)
			{
				NetworkInterface ni = netInterfaces.nextElement();
				Enumeration<InetAddress> address = ni.getInetAddresses();
				while (address.hasMoreElements())
				{
					ip = address.nextElement();
					if (!ip.isSiteLocalAddress() && !ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1)
					{
						// 外网IP
						netip = ip.getHostAddress();
						finded = true;
						break;
					} 
					else if (ip.isSiteLocalAddress() && !ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1)
					{
						// 内网IP
						localip = ip.getHostAddress();
					}
				}
			}
			
			if (netip != null && !"".equals(netip))
			{
				return netip;
			} 
			else
			{
				return localip;
			}
		} 
		catch (SocketException e)
		{
			
		}
		return "0";
	}
}





